(The picture above is not a hint :-))

I speak a global language, every human understands…

Most respect me, and watch me closely

Few ignore and sometimes learn, others never !

In transit, rolling away every life event, emotion, and expression has been experienced; day or night !

Appreciation to curses I have heard it all !

Take risks in life but not with me; yet time and time again people forget !

Most days I am sane and predictable. Sometimes I do go crazy or completely shut down ! Disappoint I do, allowing people to step up and keep us moving !

Roads less travelled will rarely see me!

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Put your answers in the comments!